Needleless syringe which functions with the active agent being driven by a shocktube effect
US6913593B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2000 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jan 24, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3145
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a needleless syringe (1), comprising the following' successively: a gas generator, a gas expansion chamber (3), a means for retaining particles of the active agent and a tube (6) for ejecting said particles. The main characteristic of the inventive syringe is that the gas generator is a pyrotechnic generator (2), comprising a pyrotechnic charge (10) which generates gas, a gas generator and an initiation device. The invention is also characterized in that the retaining means comprise at least one lid (8), which is fixed to the ejection tube and is configured to break under the influence of the gases generated by the combustion of said charge (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.